Their current macOS app is built using MacGap, which is a wrapper for web apps — so technically, it was just a port of the web version of the Slack website in a desktop window. However, the beta is rebuilt from the ground up using Electron, speeding things up significantly.

It mostly still looks like the same old Slack, you’ll immediately notice these key improvements:

Insanely fast start-up and team switching

The team bar now changes according to your color scheme

A fancy new top without that ugly desktop frame

The app in general is way more speedy

If you’re excited to try it, hop over to their beta website to download the release.